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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	12 Months Ended
	Apr. 30, 2022	Apr. 30, 2021	Apr. 30, 2020
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - UNAUDITED [Abstract]
Net income (loss)	$ 148,309	$ 148,256	$ (74,287)
Other comprehensive income (loss):
Foreign currency translation adjustment	(71,625)	82,762	(28,596)
Unamortized retirement costs, net of tax (expense) benefit of $(13,440), $(2,103), and $10,137, respectively	45,920	(226)	(31,863)
Unrealized gain (loss) on interest rate swaps, net of tax (expense) benefit of $(2,787), $(657), and $2,114, respectively	8,349	2,171	(6,300)
Total other comprehensive income (loss)	(17,356)	84,707	(66,759)
Comprehensive income (loss)	$ 130,953	$ 232,963	$ (141,046)

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